Mistral Launches Voxtral 3 Voice-Agent API Starting at $0.04 Per Minute

Mistral AI launched Voxtral 3 on Oct. 20, pairing new speech models with a voice-agent API that lets developers build systems able to listen, respond and use connected tools during calls. The agent service costs $0.04 per minute when Mistral Small 4 handles reasoning. The rate rises to $0.08 per minute with another reasoning model. Both prices cover the conversational workflow rather than a single speech function. The service converts incoming speech to text, passes the request to a reasoning model and returns a spoken answer.

Source: TokenPost